Detachable covering for bridle-bits.



No. 677,099. Patented June 25, 890i. J. H. NUNN.

DETACHABLE COVERING FUR BRIDLE BITS.

(Application filed Feb. 20, 1901.)

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JOl-IN HANOOOK NUNN, OF LONDON, ENGLAND.

DETACHABLE COVERING FOR BRlDLE-BITS.

SPECIFICATION forming part of Letters Patent No. 677,099, dated June 25, 1901.

Applicatio filed February 20, 1901. Serial No. 48,072- (No model.)

To all whom it may concern.-

Be it known that I, J OHN HANCOCK NUNN, (trading as James Lyne Hancock, india-rubber manufacturer,) a subject of the King of Great Britain, residing at 266 Goswell road, London, England, haveinvented new and useful Improvements in Detachable Coverings for Bridle-Bits, of which the following is a specification.

This invention has reference to detachable rubber covers for the mouthpieces of bridlebits for horses.

These detachable rubber covers are usually made from uncured rubber sheet rolled up into cylindrical form upon a core and then vulcanized, so that their tendency will be to remain rolled up when placed around the mouthpiece ofthebit. Itisfoundinpractice,however,that this tendency to remain rolled up is not sufficiently strong and the covers occasionally in consequence come off the bit when in use. To avoid this contingency, the rubber sheet is according to my invent-ion specially reinforced during manufacture by incorporating between two sheets of uncured rubber a sheet of elastic textile material, such as stockinette, the whole compound sheet being rolled up upon a mandrel and vulcanized without producing the adhesion of the contiguous rolled layers or convolutions of the incorporated or compound sheet.

In the accompanying drawings, Figure 1 shows a piece of compound sheet for making a bit-cover. Figs. 2 and 3 show in outside and end views a bit-cover made from the said sheet.

a and b are the rubber sheets, and c is the textile fabric embedded between them, the three sheets forming a compound sheet. A piece of this compound sheet of suitable size having been taken, it is rolled upon a core, with talc powder or its equivalent dusted between the convolutions, and the whole is vulcanized in the rolled-up state, the said powder preventing the convolutions of the compound sheet from adhering together in the vulcanizing process. After vulcanization the two outer sheets of rubber appear to cooperate with one another and with the elastic textile fabric embedded between them to keep the mouthpiece-cover rolled up in the form shown in Figs. 2 and 3, so that there will be no tendency for it to come off the bit acci JNO. HANCOCK NUNN.

\Vitnesses ALFRED S. BISHOP, L. M. REDDIE. 

